10001220210101 has 4 divisors (see below), whose sum is σ = 10074221817612. Its totient is φ = 9928218602592.

The previous prime is 10001220210073. The next prime is 10001220210103. The reversal of 10001220210101 is 10101202210001.

10001220210101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7922507943025 + 2078712267076 = 2814695^2 + 1441774^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001220210101 - 2²² = 10001216015797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001220210103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36500803550 + ... + 36500803823.

It is an arithmetic number, because the mean of its divisors is an integer number (2518555454403).

Almost surely, 2^{10001220210101} is an apocalyptic number.

It is an amenable number.

10001220210101 is a deficient number, since it is larger than the sum of its proper divisors (73001607511).

10001220210101 is an equidigital number, since it uses as much as digits as its factorization.

10001220210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73001607510.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10001220210101 its reverse (10101202210001), we get a palindrome (20102422420102).

The spelling of 10001220210101 in words is "ten trillion, one billion, two hundred twenty million, two hundred ten thousand, one hundred one".